74223197 has 2 divisors, whose sum is σ = 74223198. Its totient is φ = 74223196.

The previous prime is 74223169. The next prime is 74223211. The reversal of 74223197 is 79132247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74200996 + 22201 = 8614^2 + 149^2 .

It is an emirp because it is prime and its reverse (79132247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74223197 - 2⁶ = 74223133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74223137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37111598 + 37111599.

It is an arithmetic number, because the mean of its divisors is an integer number (37111599).

Almost surely, 2^74223197 is an apocalyptic number.

It is an amenable number.

74223197 is a deficient number, since it is larger than the sum of its proper divisors (1).

74223197 is an equidigital number, since it uses as much as digits as its factorization.

74223197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 35.

The square root of 74223197 is about 8615.2885616211. The cubic root of 74223197 is about 420.2553190603.

The spelling of 74223197 in words is "seventy-four million, two hundred twenty-three thousand, one hundred ninety-seven".